We ended up leaving about an hour later than planned, then made a couple more stops than we planned (the little man was being a bit fussy this time around); so our actual drive time was about what we expected.
We found what looks like a decent place for breakfast just down the road, Bad Ass Coffee... could be interesting.
I'm used to our truck... 490 miles before I hit "e"... This brand new exploder we rented does get better mileage, but the ridiculously small tank is an irritation. It's only 16 gallons from totally topped off, to the low fuel alert. It's only 410 miles from door to door, and we had to stop twice (topped tanks in Tucson, then refueled fully outside Las Cruces NM).
At this point we're thinking sleeping a little late, and stopping in Dallas for the night. We'll see how we feel when we wake up.
Oh and we took what will most likely be our last opportunity to eat In-n-Out for a while...
... The boy approves. He likes the fries (he'd be one of the few. Love the burgers, but their fries aren't great).